US4650954A - Process for the butt-welding of especially deep-drawable steel sheets or steel strips galvanized at least on one side - Google Patents

Process for the butt-welding of especially deep-drawable steel sheets or steel strips galvanized at least on one side Download PDF

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Publication number
US4650954A
US4650954A US06/820,865 US82086586A US4650954A US 4650954 A US4650954 A US 4650954A US 82086586 A US82086586 A US 82086586A US 4650954 A US4650954 A US 4650954A
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Prior art keywords
welding
sheets
strips
cut edges
welding seam
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Expired - Lifetime
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US06/820,865
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English (en)
Inventor
Adam Frings
Wilfried Prange
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Thyssen Stahl AG
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Thyssen Stahl AG
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Assigned to THYSSEN STAHL AG, A GERMAN CORP reassignment THYSSEN STAHL AG, A GERMAN CORP ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FRINGS, ADAM, PRANGE, WILFRIED
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/26—Seam welding of rectilinear seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B23K26/703—Cooling arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic materials other than metals or composite materials

Definitions

  • the invention relates to a process for the butt-welding by means of a laser beam of especially deep-drawable steel sheets or steel strips galvanized at least on one side and having essentially rectangular cut edges, in which the welding seam is protected against corrosion.
  • the welding seam is made by means of an electron beam, with filling material (welding wire) being added.
  • filling material welding wire
  • a zone without corrosion protection is obtained not only in the region of the welding seam, but also in relatively wide regions next to the welding seam, because the zinc evaporates owing to the high welding temperature. It is therefore necessary, after welding, to provide not only the welding seam, but also the regions stripped of zinc with a corrosion-proof coating. Measures of this type are merely expedients and do not satisfy the fabricators who require a sheet-metal plate protected against corrosion over its entire surface and suitable for deep-drawing.
  • the object on which the invention is based is to provide, from at least two galvanized sheets or strips by means of butt-welding, with the least possible outlay, a wider, especially deep-drawable sheet or strip, the surface of which is plane and corrosion-proof even in the region of the welding seam.
  • this object is achieved by making cut edges with a corrugation in the longitudinal direction of at most 0.04 mm on the sheets or strips, and by bringing the sheets or strips into touch contact with these cut edges and then welding them to one another by means of the laser beam which has a focal spot covering the cut edges of a diameter of at most 0.2 mm.
  • the welding produces directly not only a welding seam essentially flush with the sheet, but also a corrosion-proof welding seam. It is therefore unnecessary either to level off the welding seam by reworking after welding or to provide it with corrosion protection subsequently.
  • the use of laser beam guarantees that the direct supply of heat is restricted to a very narrow region, with the result that there remains only a very narrow zinc-free zone which is corrosion-proof because of the long-range protection effect, known per se, exerted by the zinc of the regions adjacent on both sides. Since the welding joint over its entire length has a maximum width of 2 ⁇ 0.04 mm at most at a few points, the process according to the invention makes do without additive material (filler wire).
  • the quantity of material required to fill the remaining extremely small holes and provided by the adjacent zones of the sheets hardly reduces at all the thickness of the sheet which is thicker than the gap by a power of ten.
  • the use of the sheet it means that, in comparison with a sheet protected against corrosion by means of a uniform zinc coating, it has no disadvantages as regards corrosion protection because of the long-range protection effect exerted by the zinc on the zinc-free welding seam.
  • the advantage of the process according to the invention for the manufacturer is that, without too high an outlay, he can produce, from the sheets or strips supplied by his conventional galvanizing plants, sheets or strips of multiple width without any loss of quality in the region of the welding seams.
  • the sheets or stips are cooled on both sides of the welding seam. Cooling can be carried out, for example, by blowing on cooling gas. Especially good heat protection is obtained if the sheets to be welded together are clamped along the entire welding gap in clamping jaws which are made of thermally conductive material, such as, for example, copper, and which, if appropriate, are cooled by means of a cooling fluid circulating inside them. To achieve good cooling of the sheet surface and flatness of the sheet, it is advantageous if the clamping jaws engage on the sheet at a distance of 5 to 10 mm from the welding gap. This ensures that the sheet material is melted solely in the region of the focal spot, and the liquid material solidifies again immediately, as soon as it escapes the focal spot of the laser beam.
  • Good cooling is particularly important for the underside of the sheet, because it is necessary to prevent the molten material from flowing out of the welding joint. An outflow can be effectively prevented if the parts of the clamping jaws arranged under the sheet are subjected to especially intensive cooling.
  • a clamping device which bridges the welding joint and which has in the region of the welding joint a deep groove, into which inert gas can be blown to maintain the welding seam under an inert-gas atmosphere. This not only prevents the oxidation of the welding material, but also assists the cooling of the sheet underside. Furthermore, an excess gas pressure in this groove counteracts the outflow of molten material from the welding joint.
  • FIGS. 1 and 2 show similar means for butt-welding during the process in cross-section.
  • the process according to the invention is suitable for the butt-welding of thin sheet metal, especially within a thickness range of 0.5 to 1.5 mm.
  • the essentially rectangular cut edges are to have a corrugation of at most 0.04 mm over their length. If such sheets are brought into touch contact for butt-welding, the maximum distance between them at individual points can be 0.08 mm at most.
  • the sheets 1,2 to be butt-welded to one another lie in touch contact on a base 3 with a plane supporting surface 4.
  • a longitudinal groove 5 open towards the supporting surface 4 is provided in the base 3.
  • the essentially rectangular edges 7, to be welded to one another, of the sheets 1,2 are located in the region of this longitudinal groove 5.
  • the sheets 1,2 are pressed against the base 3 by means of clamping jaws 8,9 and are thus held fixed. Both the base 3 and the clamping jaws 8,9 have channels 10 to 13, through which a coolant is conveyed. Inert gas is passed into the longitudinal groove 5 closed off at the top by the sheets 1,2 and likewise cools and generates a certain excess pressure in the longitudinal groove 5.
  • a laser gun 14 with a laser beam 15 directed onto the welding joint is movable in the longitudinal direction over the welding joint 7.
  • the laser beam 15 has a focal spot of a diameter of at most 0.2 mm. This focal spot is directed onto the center line of the welding joint 7.
  • the travelling speed of the laser gun 14 over the welding joint 7 and the welding energy transmitted to the welding joint depend, above all, on the thickness of the sheets 1,2.
  • a distance between the cooled copper clamping jaws 8,9 and the center of the welding joint 7 of 3 mm and a focal spot of the laser beam of a diameter of less than 0.2 mm good results are obtained with a travelling speed of the laser gun 14 over the welding joint of 2 m/min.
  • the energy transmitted at the same time is then approximately 375 J/cm.
  • the welding seam obtained in this way is faultless both in terms of corrosion protection and in terms of mechanical properties (elongation, strength), so that the sheet can be shaped without difficulty even in the region of the welding seam.
  • FIG. 2 differs from that of FIG. 1 only in the design of the base which, in this case, is not bridge-like, but divided in two.
  • the individual parts are screwed to a support.
  • the purpose of the downward funnel-like widening of the longitudinal groove is to prevent splashes from being deflected towards the welding seam.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)
  • Arc Welding In General (AREA)
US06/820,865 1985-01-25 1986-01-21 Process for the butt-welding of especially deep-drawable steel sheets or steel strips galvanized at least on one side Expired - Lifetime US4650954A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853502368 DE3502368A1 (de) 1985-01-25 1985-01-25 Verfahren zum stumpfschweissen von mindestens einseitig verzinkten, insbesondere tiefziehfaehigen stahlblechen oder stahlbaender
DE3502368 1985-01-25

Publications (1)

Publication Number Publication Date
US4650954A true US4650954A (en) 1987-03-17

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US06/820,865 Expired - Lifetime US4650954A (en) 1985-01-25 1986-01-21 Process for the butt-welding of especially deep-drawable steel sheets or steel strips galvanized at least on one side

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Country Link
US (1) US4650954A (de)
EP (1) EP0189806B2 (de)
AT (1) ATE44352T1 (de)
DE (2) DE3502368A1 (de)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945202A (en) * 1988-01-19 1990-07-31 Buedenbender Bernd Method of and apparatus for the welding of thin sheet metal workpieces
US5185908A (en) * 1991-11-18 1993-02-16 Hans Oetiker Ag Maschinen- Und Apparatefabrik Method for connecting two parts along abutting edges and connection obtained thereby
US5245156A (en) * 1991-08-23 1993-09-14 Toyota Jidosha Kabushiki Kaisha Method of laser-welding metal sheets having different thicknesses
US5371337A (en) * 1992-10-09 1994-12-06 General Motors Corporation Welding process and apparatus
US5591360A (en) * 1995-04-12 1997-01-07 The Twentyfirst Century Corporation Method of butt welding
US5595670A (en) * 1995-04-17 1997-01-21 The Twentyfirst Century Corporation Method of high speed high power welding
US5603853A (en) * 1995-02-28 1997-02-18 The Twentyfirst Century Corporation Method of high energy density radiation beam lap welding
US5618452A (en) * 1992-07-14 1997-04-08 Mitsubishi Denki Kabushiki Kaisha Method and apparatus for laser welding with an assist gas including dried air and the assist gas composition
US5634255A (en) * 1994-11-03 1997-06-03 Bishop; Bob R. Method and apparatus for automated processing and handling of mash weldedsheet metal blanks
US5674420A (en) * 1995-06-12 1997-10-07 Worthington Industries Incorporated Clamping device for welding machine
US5814786A (en) * 1995-11-08 1998-09-29 Littell International, Inc. System and method for laser butt-welding
US6031199A (en) * 1997-10-28 2000-02-29 Worthington Machine Technology Combination laser cutting and blank welding apparatus and method
US6191383B1 (en) * 1996-11-11 2001-02-20 Omega Laser Systems B.V. Welding device
US6419142B1 (en) 1997-12-19 2002-07-16 Esab Ab Apparatus for friction stir welding
US20060278618A1 (en) * 2005-06-10 2006-12-14 Forrest Mariana G System and Methodology for Zero-Gap Welding
US20080029498A1 (en) * 2006-08-03 2008-02-07 Forrest Mariana G Dual Beam Laser Welding Head
US20080251504A1 (en) * 2007-04-11 2008-10-16 Feng Lu Laser-welding apparatus and method
WO2008138973A1 (de) * 2007-05-15 2008-11-20 Thyssenkrupp Lasertechnik Gmbh Vorrichtung zum herstellen von tailored blanks durch schneiden und schweissen von zu fügenden blechen
US20090108050A1 (en) * 2005-08-12 2009-04-30 Showa Denko K.K., Friction stirring-joining method and method of manufaturing hollow body
CN102601528A (zh) * 2012-03-28 2012-07-25 昆山宝锦激光拼焊有限公司 汽车件激光对焊装置
US20120255155A1 (en) * 2009-12-15 2012-10-11 Alutech Gesellschaft M.B.H. Method for Producing a Container for a Temperature-Sensitive Operating Material, and Container for Said Material
US20120280019A1 (en) * 2006-07-25 2012-11-08 Jaguar Cars Limited Ultrasonic welding apparatus
US20140183245A1 (en) * 2012-12-28 2014-07-03 Honda Motor Co., Ltd. Friction stir welding apparatus
US10654134B2 (en) 2014-04-25 2020-05-19 Arcelormittal Method for the preparation of aluminized steel sheets to be welded and then press hardened
CN111390482A (zh) * 2020-06-05 2020-07-10 昆山华恒焊接股份有限公司 钢带平齐对接装置及钢带平齐对接方法
CN114608924A (zh) * 2022-02-15 2022-06-10 北京钢研高纳科技股份有限公司 高温合金电子束焊接接头透射电镜样品的制备方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3626974A1 (de) * 1986-08-08 1988-02-11 Thyssen Stahl Ag Vorrichtung und verfahren zum stumpfschweissen von blechen mittels eines laserstrahls
DE3632952A1 (de) * 1986-09-27 1988-04-07 Hoesch Ag Verfahren und vorrichtung zur kontinuierlichen herstellung rohrfoermiger koerper mittels laser-laengsnahtschweissung
DE3684331D1 (de) * 1986-12-22 1992-04-16 Thyssen Stahl Ag Verfahren zum herstellen eines formkoerpers aus blechteilen unterschiedlicher dicke.
DE9007725U1 (de) * 1989-05-05 1994-11-03 Oxytechnik Gesellschaft für Systemtechnik mbH Co.KG, 65187 Wiesbaden Vorrichtung zum Verbinden von ebenen Bändern
DE3920825C2 (de) * 1989-06-24 1995-06-01 Oxytechnik Ges Systemtech Vorrichtung zum Beschneiden und Stumpfschweißen von Band- oder Blechrändern mit einer Lasereinrichtung
FR2682627B1 (fr) * 1991-10-18 1994-01-14 Sollac Procede de soudage par faisceau laser de deux toles revetues.
FR2705601B1 (fr) * 1993-05-28 1995-08-18 Lorraine Laminage Dispositif de guidage et de transfert d'au moins deux flans de tôle préalablement accostés bord à bord et installation de soudage comportant un tel dispositif de guidage et de transfert.
DE19537924C2 (de) * 1994-10-18 1997-06-12 Thyssen Industrie Verfahren zum Kühlen des Schweißnahtbereichs beim Laserschweißen und Vorrichtung zum Durchführen dieses Verfahrens
DE19501869C1 (de) * 1995-01-23 1996-07-18 Thyssen Laser Technik Gmbh Vorrichtung zum Schweißen von Werkstücken mit Laserstrahlung
DE10106474B4 (de) * 2000-05-23 2007-05-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Aufbringen einer Korrosionsschutzschicht auf Schnittflächen von Blechen
CN111215769A (zh) * 2019-12-05 2020-06-02 安徽省春谷3D打印智能装备产业技术研究院有限公司 一种激光头带有防护组件的激光焊接机
CN118637220A (zh) * 2024-06-13 2024-09-13 中冶焦耐(大连)工程技术有限公司 一种减少氨水贮槽氨水应力腐蚀的方法

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US2852660A (en) * 1957-10-29 1958-09-16 Rohr Aircraft Corp Apparatus and method for arc welding metal
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US3909582A (en) * 1971-07-19 1975-09-30 American Can Co Method of forming a line of weakness in a multilayer laminate
US4000392A (en) * 1974-07-01 1976-12-28 United Technologies Corporation Fusion zone purification by controlled laser welding
US4417125A (en) * 1981-02-24 1983-11-22 Amada Engineering & Service Co., Inc. Laser processing machine
EP0117751A2 (de) * 1983-02-28 1984-09-05 Kawasaki Steel Corporation Vorrichtung zum Stumpfschweissen von Stahlbändern mit einem Laserstrahl in einer Stahlbandverarbeitungsstrasse
EP0098306B1 (de) * 1982-01-08 1986-10-15 Kawasaki Steel Corporation Schweissverfahren mittels laserstrahl

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FR2338766A1 (fr) * 1976-01-20 1977-08-19 Saurin Emmanuel Procede de fabrication d'une boite de conserve et dispositif pour l'execution de ce procede
DE3110235A1 (de) * 1981-03-17 1982-10-21 Trumpf GmbH & Co, 7257 Ditzingen "verfahren und vorrichtung zum brennschneiden mittels eines laserstrahls"
DE3473422D1 (en) * 1984-02-27 1988-09-22 Kawasaki Steel Co An apparatus for butt welding steel strips by using a laser beam in a steel strip-processing line

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US1773068A (en) * 1927-08-08 1930-08-12 Gen Electric Electric welding
US2852660A (en) * 1957-10-29 1958-09-16 Rohr Aircraft Corp Apparatus and method for arc welding metal
US3535489A (en) * 1968-05-03 1970-10-20 Smith Corp A O Electron beam welding apparatus
US3909582A (en) * 1971-07-19 1975-09-30 American Can Co Method of forming a line of weakness in a multilayer laminate
US3881084A (en) * 1973-10-04 1975-04-29 Ford Motor Co Method of welding galvanized steel
US4000392A (en) * 1974-07-01 1976-12-28 United Technologies Corporation Fusion zone purification by controlled laser welding
US4417125A (en) * 1981-02-24 1983-11-22 Amada Engineering & Service Co., Inc. Laser processing machine
EP0098306B1 (de) * 1982-01-08 1986-10-15 Kawasaki Steel Corporation Schweissverfahren mittels laserstrahl
EP0117751A2 (de) * 1983-02-28 1984-09-05 Kawasaki Steel Corporation Vorrichtung zum Stumpfschweissen von Stahlbändern mit einem Laserstrahl in einer Stahlbandverarbeitungsstrasse

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945202A (en) * 1988-01-19 1990-07-31 Buedenbender Bernd Method of and apparatus for the welding of thin sheet metal workpieces
US5245156A (en) * 1991-08-23 1993-09-14 Toyota Jidosha Kabushiki Kaisha Method of laser-welding metal sheets having different thicknesses
US5185908A (en) * 1991-11-18 1993-02-16 Hans Oetiker Ag Maschinen- Und Apparatefabrik Method for connecting two parts along abutting edges and connection obtained thereby
US5831239A (en) * 1992-07-14 1998-11-03 Mitsubishi Denki Kabushiki Kaisha Laser welding method
US5618452A (en) * 1992-07-14 1997-04-08 Mitsubishi Denki Kabushiki Kaisha Method and apparatus for laser welding with an assist gas including dried air and the assist gas composition
US5371337A (en) * 1992-10-09 1994-12-06 General Motors Corporation Welding process and apparatus
US5634255A (en) * 1994-11-03 1997-06-03 Bishop; Bob R. Method and apparatus for automated processing and handling of mash weldedsheet metal blanks
US5724712A (en) * 1994-11-03 1998-03-10 Bishop; Bob R. Method and apparatus for automated processing and handling of welded sheet metal blanks
US5603853A (en) * 1995-02-28 1997-02-18 The Twentyfirst Century Corporation Method of high energy density radiation beam lap welding
US5591360A (en) * 1995-04-12 1997-01-07 The Twentyfirst Century Corporation Method of butt welding
US5595670A (en) * 1995-04-17 1997-01-21 The Twentyfirst Century Corporation Method of high speed high power welding
US5674420A (en) * 1995-06-12 1997-10-07 Worthington Industries Incorporated Clamping device for welding machine
US5926967A (en) * 1995-11-08 1999-07-27 Littell International, Inc. System for gauging the position of joint edges for welding
US5814786A (en) * 1995-11-08 1998-09-29 Littell International, Inc. System and method for laser butt-welding
US5932117A (en) * 1995-11-08 1999-08-03 Littell International, Inc. Clamping system for sheet material in a welding system
US5951889A (en) * 1995-11-08 1999-09-14 Littell International, Inc. System and method for laser welding
US6070781A (en) * 1995-11-08 2000-06-06 Littell International, Inc. System for bringing the joint edges of sheet material into butting relationship for welding
US6191383B1 (en) * 1996-11-11 2001-02-20 Omega Laser Systems B.V. Welding device
US6031199A (en) * 1997-10-28 2000-02-29 Worthington Machine Technology Combination laser cutting and blank welding apparatus and method
US6419142B1 (en) 1997-12-19 2002-07-16 Esab Ab Apparatus for friction stir welding
US20060278618A1 (en) * 2005-06-10 2006-12-14 Forrest Mariana G System and Methodology for Zero-Gap Welding
US7693696B2 (en) 2005-06-10 2010-04-06 Chrysler Group Llc System and methodology for zero-gap welding
US8253062B2 (en) 2005-06-10 2012-08-28 Chrysler Group Llc System and methodology for zero-gap welding
US7721938B2 (en) * 2005-08-12 2010-05-25 Showa Denko K.K. Friction stirring-joining method and method of manufacturing hollow body
US20090108050A1 (en) * 2005-08-12 2009-04-30 Showa Denko K.K., Friction stirring-joining method and method of manufaturing hollow body
US20120280019A1 (en) * 2006-07-25 2012-11-08 Jaguar Cars Limited Ultrasonic welding apparatus
US8803029B2 (en) 2006-08-03 2014-08-12 Chrysler Group Llc Dual beam laser welding head
US20080029498A1 (en) * 2006-08-03 2008-02-07 Forrest Mariana G Dual Beam Laser Welding Head
US20080251504A1 (en) * 2007-04-11 2008-10-16 Feng Lu Laser-welding apparatus and method
US8198565B2 (en) 2007-04-11 2012-06-12 Chrysler Group Llc Laser-welding apparatus and method
US8263898B2 (en) 2007-05-15 2012-09-11 Thyssenkrupp Lasertechnik Gmbh Device for producing tailored blanks by cutting welding sheets to be joined
US20100140234A1 (en) * 2007-05-15 2010-06-10 Thyssenkrupp Lasertechniik Gmbh Device for producing tailored blanks by cutting welding sheets to be joined
WO2008138973A1 (de) * 2007-05-15 2008-11-20 Thyssenkrupp Lasertechnik Gmbh Vorrichtung zum herstellen von tailored blanks durch schneiden und schweissen von zu fügenden blechen
US20120255155A1 (en) * 2009-12-15 2012-10-11 Alutech Gesellschaft M.B.H. Method for Producing a Container for a Temperature-Sensitive Operating Material, and Container for Said Material
CN102601528A (zh) * 2012-03-28 2012-07-25 昆山宝锦激光拼焊有限公司 汽车件激光对焊装置
US9050688B2 (en) * 2012-12-28 2015-06-09 F-Tech Inc. Friction stir welding apparatus
CN103909340A (zh) * 2012-12-28 2014-07-09 株式会社F.泰克 摩擦搅拌接合装置
US20140183245A1 (en) * 2012-12-28 2014-07-03 Honda Motor Co., Ltd. Friction stir welding apparatus
US10654134B2 (en) 2014-04-25 2020-05-19 Arcelormittal Method for the preparation of aluminized steel sheets to be welded and then press hardened
US10668570B2 (en) 2014-04-25 2020-06-02 Arcelormittal Method and device for preparing aluminum-coated steel sheets intended for being welded and then hardened under a press; corresponding welded blank
US10780529B2 (en) 2014-04-25 2020-09-22 Arcelormittal Welded blanks made from aluminized steel sheets and having advantageous welded joint characteristics
US11097377B2 (en) 2014-04-25 2021-08-24 Arcelormittal Method for the preparation of aluminized steel sheets to be welded and then press hardened
US11826856B2 (en) 2014-04-25 2023-11-28 Arcelormittal Methods for preparation of sheets to be used for fabrication of a welded steel blank and fabricating a welded blank
CN111390482A (zh) * 2020-06-05 2020-07-10 昆山华恒焊接股份有限公司 钢带平齐对接装置及钢带平齐对接方法
CN114608924A (zh) * 2022-02-15 2022-06-10 北京钢研高纳科技股份有限公司 高温合金电子束焊接接头透射电镜样品的制备方法
CN114608924B (zh) * 2022-02-15 2023-11-03 北京钢研高纳科技股份有限公司 高温合金电子束焊接接头透射电镜样品的制备方法

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EP0189806A1 (de) 1986-08-06
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EP0189806B2 (de) 1994-08-03
EP0189806B1 (de) 1989-07-05
DE3502368A1 (de) 1986-07-31

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